For That Formaldehyde Fresh Scent

The Formaldehyde Generator, from 1910, used a candle to heat solid formaldehyde in a dish to disinfect a room during and after the epidemics of scarlet fever, smallpox, and diphtheria, which were going around in those days. 

Continue >>

Image courtesy of M. Donald Blaufox, MD (www.mohma.org).